United
States v. Rhoades, 65 M.J. 393 (under RCM
502(d)(4), a person may not serve
as defense counsel if the person is or has been the accuser, an
investigating
officer, a military judge, or a court-martial member, subject to
express waiver
by the accused; in addition, no person who has acted as counsel for a
party may
serve as counsel for an opposing party in the same case; the
disqualifications
listed in RCM 502(d)(4) are not exclusive, and counsel may be
disqualified
based upon otherwise applicable standards of professional
responsibility).